Chapter 10. Oscillators and Harmonic Generators

  1. W. Alan Davis PhD1 and
  2. Krishna K. Agarwal PhD2

Published Online: 9 OCT 2001

DOI: 10.1002/0471200689.ch10

Radio Frequency Circuit Design

Radio Frequency Circuit Design

How to Cite

Davis, W. A. and Agarwal, K. K. (2001) Oscillators and Harmonic Generators, in Radio Frequency Circuit Design, John Wiley & Sons, Inc., New York, USA. doi: 10.1002/0471200689.ch10

Author Information

  1. 1

    University of Texas at Arlington

  2. 2

    Raytheon Systems Company

Publication History

  1. Published Online: 9 OCT 2001

Book Series:

  1. Wiley Series in Microwave and Optical Engineering

Book Series Editors:

  1. Kai Chang

Series Editor Information

  1. Texas A&M University

ISBN Information

Print ISBN: 9780471350521

Online ISBN: 9780471200680



  • oscillators;
  • harmonic generators;
  • fundamentals;
  • feedback theory;
  • two-port oscillators;
  • example;
  • requirements;
  • reflection coefficient;
  • common gate oscillators;
  • stability;
  • injection-locked oscillators;
  • problems


This chapter describes oscillator fundamentals. An oscillator is a circuit that converts energy from a power source (usually a dc power source) to ac energy. In order to produce a self-sustaining oscillation, there necessarily must be feedback from the output to the input, sufficient gain to overcome losses in the feedback path, and a resonator. There are a number of ways to classify oscillator circuits. One way is by describing the distinction between one-port and two-port oscillators. This is discussed along with a practical example. The importance of the stability of the oscillator is also addressed. A mathematical discussion is given of harmonic generators.